/*
 * Copyright 2014 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
'use strict';

var yaml = require('js-yaml');

module.exports = function () {
  return function (input) {
    if (typeof (input) === 'undefined' || (typeof (input) === 'object' && Object.keys(input).length === 0)) {
      return '';
    }

    return yaml.dump(input, {
      skipInvalid: true,
      sort: true,
      lineWidth: Number.MAX_VALUE
    });
  };
};
